ASTM E2793-22 PDF

Full title and description

Standard Guide for Evaluation, Calibration, and Correlation of E274 Friction Measurement Systems and Equipment — a concise ASTM guide that defines procedures and practices used to evaluate, calibrate, and correlate pavement friction measurement systems (those using Test Method E274/E274M) through ISO/IEC 17025–accredited field test centers and area reference friction measurement systems (ARFMS).

Abstract

This guide describes the process for ensuring that friction measurement systems used to measure roadway skid resistance produce consistent and accurate data. It covers evaluation, calibration, and correlation processes—typically performed at accredited field test centers using specialized equipment, trained personnel, and ARFMS—so that individual E274/E274M systems can be related to national reference systems. The guide recommends periodic (generally annual) calibration and correlation and the recalibration of systems after repairs affecting calibration.

General information

• Status: Active standard.
• Publication date: February 15, 2022 (published as E2793-22; noted updates recorded in late February 2022).
• Publisher: ASTM International.
• ICS / categories: 21.260 (related to lubrication/tribology and friction measurement categories).
• Edition / version: E2793-22 (2022 edition).
• Number of pages: 5.

Scope

This guide covers the evaluation, calibration, and correlation of Test Method E274/E274M friction measurement systems as conducted at ISO/IEC 17025–accredited field test centers (FTCs). It describes the procedures and requirements for using specialized equipment, area reference friction measurement systems (ARFMS), defined surfaces and speeds, and trained personnel to identify and quantify variables affecting system performance and to relate field systems to reference systems. The guide also notes unit conventions (inch-pound values as standard with SI conversions provided for information) and calls out that safety and regulatory considerations are the user’s responsibility.

Key topics and requirements

• Evaluation procedures for E274/E274M friction measurement systems to detect measurement anomalies and performance drift.
• Calibration processes performed at ISO/IEC 17025–accredited field test centers using ARFMS and specialized instrumentation.
• Correlation methods to relate individual systems to national reference systems (including recommended repeat counts, surfaces, and speeds as part of FTC procedures).
• Recommendations on calibration frequency (generally annual) and procedure for recalibration after repairs or adjustments.
• Reference to more stringent calibration requirements defined by Guide E1890 for ARFMS correlation activities.

Typical use and users

Used by transportation agencies, accredited field test centers, pavement testing laboratories, equipment manufacturers, contractors performing skid-resistance surveys, and researchers in pavement friction and road safety. Typical uses include routine calibration and quality assurance of friction-measurement vehicles and correlation of local systems to national or regional reference systems.

Related standards

Closely related to ASTM Test Method E274/E274M (skid resistance/friction measurement) and Guide E1890 (requirements for field test centers and ARFMS correlation). E2793:22 replaces earlier E2793 editions (for example E2793:16). Users should consult the referenced test methods and guides when implementing E2793-22 procedures.

Keywords

friction measurement; skid resistance; pavement friction; E274; calibration; correlation; field test center (FTC); area reference friction measurement system (ARFMS); ISO/IEC 17025; pavement safety.

FAQ

Q: What is this standard?

A: ASTM E2793-22 is a guide that specifies how to evaluate, calibrate, and correlate pavement friction measurement systems that use Test Method E274/E274M, primarily through procedures conducted at accredited field test centers.

Q: What does it cover?

A: It covers procedures and best practices for system evaluation, calibration, and correlation to reference systems (ARFMS), including requirements for accredited testing centers, recommended calibration intervals, and methods to quantify variables affecting system performance.

Q: Who typically uses it?

A: Transportation departments, accredited field test centers, pavement testing and research laboratories, equipment manufacturers, and contractors involved in skid-resistance measurement and road safety programs.

Q: Is it current or superseded?

A: As of its 2022 publication it is the active edition (E2793-22), superseding earlier editions such as E2793:16. Users should verify with ASTM for any amendments or later revisions.

Q: Is it part of a series?

A: It is part of ASTM’s family of standards and guides addressing pavement friction and skid-resistance testing (notably linked to Test Method E274/E274M and Guide E1890) and follows the historical E2793 series of guides.

Q: What are the key keywords?

A: Friction measurement, skid resistance, E274, calibration, correlation, ARFMS, field test center, ISO/IEC 17025, pavement safety.